213244125 has 48 divisors (see below), whose sum is σ = 375685440. Its totient is φ = 107121600.

The previous prime is 213244117. The next prime is 213244127. The reversal of 213244125 is 521442312.

It is not a de Polignac number, because 213244125 - 2³ = 213244117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213244095 and 213244104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213244127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1232539 + ... + 1232711.

It is an arithmetic number, because the mean of its divisors is an integer number (7826780).

Almost surely, 2^213244125 is an apocalyptic number.

213244125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213244125 is a deficient number, since it is larger than the sum of its proper divisors (162441315).

213244125 is an equidigital number, since it uses as much as digits as its factorization.

213244125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 200 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 213244125 is about 14602.8807089560. The cubic root of 213244125 is about 597.4373340439.

Adding to 213244125 its reverse (521442312), we get a palindrome (734686437).

The spelling of 213244125 in words is "two hundred thirteen million, two hundred forty-four thousand, one hundred twenty-five".